Guard for valve handles



J. DI TSON.

GUARD FOR VALVE HANDLES. APPLICATION FILED NOV. 29, l921- 1 ,425,949.Patented Aug. 15, 1922.

INVENTOR Jes e Dz'tson ms ATTORN OF "JERSEY CITY,

NET/V JERSEY, A. CORPORATION NEW teaser.

GUARD FOR VALVE HANDLES. v

To all whom it may concern:

Be it known thatl, Jessi: DrrsoN, a citizen of he United States, and aresident of Littleton, county of Arapahoe, and State of Colorado, haveinvented a certain Guard for Valve Handles, of which the following is aspecification accompanied by drawings.

This invention relates to guards for valve handles, but moreparticularlyto a guard for the pivoted rocking, handle of a throttle valve such asused for instance for controlling the operations of a drillsharpener forforming and sharpening the bits and shanks of drill. steels. g

A drill sharpener of the type referred to is disclosed in my co-pendingapplication, Serial No- 498,212, filed September 3, 1921, although theinvention may be used with any type ofvalve or valve-handle to which itis found applicable.

In a drill sharpener for instance, the dies are carried by two visejaws, one of which i is vertically movable, actuated by fluid prestype,so that the upright position at one side of the frame of the machine.Incarrymg out the various and sure and controlled by a throttle valve,ordinarily having a pivoted rocking handle 111 operations of.the'machine, the body of the operator is apt to accidentally come incontact withthe throttle handle and move it fromv neutral position,which might cause an accident.

The object of the present invention is to provide a simple, cheap andefficient guard for the throttle valve handle of a drill sharpener, orother'machines of analogous handle can not be accidentally moved and theoperator may move about the machine or reach across from one side tothe'other without danger of start ing the machine.

To these ends the invention comprising the guard is described andclaimed in the accompanying drawings, in which- Figure 1 is asideelevation' of a drill sharpener, having my improved guard appliedthereto, only so much of the operative parts of the machine being shownas will serve to illustrate the invention.

Figure 2 is a top plan view partly in horizontal section of a portion ofthe machine showing the guard in top plan view,

Figure 3 is a detail side elevation of that portion of the machinetowhich the guard is applied, looking in a direction at right a the visejaws.

,of a rod of any suitable cross rearward direction, as

aria.

Specification of Letters Patent. Pajfg gj' ted 15; Application filedNovember 29,1921. Serial no. 518,738. v 9

angles to the direction in which Figure 1 is taken. a I I i Referring tothe drawings, the machine compr ses the base A having a main cylin-- derframe Bsuitably secured thereto as by and nuts D. Across pressure,for-operating the machine s sup plied atthe inlet G and controlled byIasuitable throttle valve in the valve chest H, having the exhaustoutlet J. The controltive fluid to the main cylinder and also to thehammer cylinder K operating the dolly L, is actuated by 'thevalvehandleO' suitably secured to the valve lever shaft- P in turnope'ratively. connected to the throttle valve. By rocking the hand leverQback and forth, the cross head F is raised and lowered and the-drillsteel shar ened or otherwise formed between the dies 5; carried Theguard for the valve; handleO may .be constructed in anysuitablemannerfor carrying out the objects of and in its preferred .formpiece of metal, whichmay be the invention, comprlses a section, having aportion of how shaped form to constitute the main body portion R of theguard, the ends S and T of the said guard piece being bent or turned toone side at angles to the lane of said bow shaped body portion it,forming bracket arms adapted to be connected to the frame of the machineon which the valve handle is mounted, and support the said body portionR at a distance from the frame while permitting the valve handle 0- torock through a given are in the space between the frame of the' machineand the .bow shaped body portion of the guard without striking or beinginterfered with by the bracket arms. A guard of the same shape couldalso be made from cast metal. In

the present instance,the valve handle is inrocked further in onedirectended to be tion, that is forwardly, than in the oppositeindicated by the dotted lines in Figurel. The valve handle may beassumed to be in neutral position when substantially upright, but may bein the formling throttle valve which distributes the mo- 1 rocked eitherbackward or forward from the neutral position In order to permit themotion of the handle desired, the ends or bracket arms of the guardarebent to one side of the'bow shaped portion at different angles to theplane of said bow shaped body portion, and preferably generallydiverging angles as indicated particularly in Figure 3, so that thebracket arm S may conveniently be connected to the frame or valve chestat the point U below the point V at which the outer bracket arm isconnected to the frame. Furthermore, in order to conveniently adjust theguard on the machine, one arm as the arm T is again bent intermediateits length at the point W.

Theoperato'r stands at the left hand side of the machine,- as viewed inFigure 1, and operates the :valve handle with his righthand, but inleaning forward or passing around he machine the guard obviouslyprotects the valve handle and prevents the body, clothes or limbs of theoperator, or articles or tools which he may be carryingfiromaccidentally displacing the valve handle and unintentionally startingthe machine in operation.

I claim:'

1. A guard for the pivoted rocking han die of a valve, comprisinga pieceoi metal having a portion oi. bow shaped form to constitute the mainbody portion of the guard, the ends of the said guard piece being turnedto one side at angles to the plane of the said bow shaped body portionforming bracket arms adapted to be connected to the frame of the machineon which the valve handle is mounted, and support the said body portionat a distance from the frame while permitting the valve handle to rockthrough a given arc between the frame 01? the machine and the bow shapedbody portion of the guard without interierence from the bracket arms.

2. A guard "for the pivoted rocking handle of a valve, comprising apiece or": metal having a portion of bow shaped. form to constitute themain body portion of the guard, the ends of said guard piece beingturned to one sideat different angles to the plane of the said howshaped body portion forming bracket arms adapted to be connected to theframe of the machine on which the valve handle is mounted, and supportthe said body portion at a distance from the frame while permitting thevalve handle to rock through a given are between the frame of themachine and the bow shaped body portion of the guard without nterferencefrom the bracket arms.

3. A guard for the pivoted rocking handle of a valve, comprising a pieceof metal bent into bow shaped form to "constitute the main body portionof the guard, the ends of said guard piece being bent to one side atgenerally diverging angles to the plane of said bow shaped body portion,forming bracket arms one or which is again bent intermediate its length,arms being adapted to be connected to the "frame of the machine on whichthe valve handle is mounted, and support the said body portion at adistance from the frame ,while permitting the valve handle to rockthrough a given are between theframe of the machine and the bow shapedbody portion out the guard without interference from the bracket arms.

In testimony whereof lt have signed this specification.

JESSE DITSON.

said bracketv

